Merge "Merge "Merge "Merge "Update samples for new DownloadRequest API" am: 10f4fb6469" into stage-aosp-master am: 936cf912c4" into oc-dev-plus-aosp am: 29e6fa6f11" into oc-dr1-dev-plus-aosp
am: 75308c29f9

Change-Id: Id359ef783e27b0f239432c9ea9aa5d2679a13ede